 Later that year he took on IBF Welterweight Title holder Simon Brown, but lost the bout via 3rd TKO.Although he never got a shot again at another major title, Vaca was destroyed by a relatively young Roy Jones Jr. in one round, in the Light-Middleweight weight-class in 1992.He continued to fight until 2002, mostly in his native Mexico, and retired after a loss to Marco Antonio Rubio.